Evidence map›Paper›PMID 35400773›Full record

ArticleAgriculture, ecosystems & environment2022

Deep soil nitrogen storage slows nitrate leaching through the vadose zone.

Julie N Weitzman, J Renée Brooks, Jana E Compton, Barton R Faulkner, Paul M Mayer, Ronald E Peachey, William D Rugh, Robert A Coulombe, Blake Hatteberg, Stephen R Hutchins

Abstract read
In one paragraph

Article in Agriculture, ecosystems & environment, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Julie N WeitzmanORISE Fellow at Pacific Ecological Systems Division, Center for Public Health and Environmental Assessment, Office of Research and Development, US Environmental Protection Agency, 200 SW 35 Street, Corvallis, OR, 97333, USA.ORCID 0000-0002-6554-4776
J Renée BrooksPacific Ecological Systems Division, Center for Public Health and Environmental Assessment, Office of Research and Development, US Environmental Protection Agency, 200 SW 35 Street, Corvallis, OR, 97333, USA.ORCID 0000-0002-5008-9774
Jana E ComptonPacific Ecological Systems Division, Center for Public Health and Environmental Assessment, Office of Research and Development, US Environmental Protection Agency, 200 SW 35 Street, Corvallis, OR, 97333, USA.ORCID 0000-0001-9833-8664
Barton R FaulknerGroundwater Characterization and Remediation Division, Center for Environmental Solutions and Emergency Response, Office of Research and Development, US Environmental Protection Agency, 919 Kerr Research Drive, Ada, OK, 74820, USA.ORCID 0000-0002-2368-5685
Paul M MayerPacific Ecological Systems Division, Center for Public Health and Environmental Assessment, Office of Research and Development, US Environmental Protection Agency, 200 SW 35 Street, Corvallis, OR, 97333, USA.ORCID 0000-0002-8550-1386
Ronald E PeacheyDepartment of Horticulture, College of Agricultural Sciences, Oregon State University, 4045 Agriculture and Life Sciences Building, Corvallis, OR, 97331, USA.
William D RughPacific Ecological Systems Division, Center for Public Health and Environmental Assessment, Office of Research and Development, US Environmental Protection Agency, 200 SW 35 Street, Corvallis, OR, 97333, USA.
Robert A CoulombeCSS, 200 SW 35 Street, Corvallis, OR, 97333, USA.
Blake HattebergCSS, 200 SW 35 Street, Corvallis, OR, 97333, USA.
Stephen R HutchinsGroundwater Characterization and Remediation Division, Center for Environmental Solutions and Emergency Response, Office of Research and Development, US Environmental Protection Agency, 919 Kerr Research Drive, Ada, OK, 74820, USA.

Funding

Intramural EPA EPA999999
6 · The paper itself

Abstract

Nitrogen (N) fertilizer applications are important for agricultural yield, yet not all the applied N is taken up by crops, leading to surplus N storage in soil or leaching to groundwater and surface water. Leaching loss of fertilizer N represents a cost for farmers and has consequences for human health and the environment, especially in the southern Willamette Valley, Oregon, USA, where groundwater nitrate contamination is prevalent. While improved nutrient management and conservation practices have been implemented to minimize leaching, nitrate levels in groundwater continue to increase in many long-term monitoring wells. To elucidate controls on leaching rates and N dynamics in agricultural soils across soil depths, and in response to seasonal and annual variation in management (e.g., fertilizer input amount and summer irrigation), we intensively monitored the transport of water and nitrate every two weeks for four years through the vadose zone at three depths (0.8, 1.5, and 3.0 m) in a sweet corn (maize) field. Though nitrate leaching was highly variable among lysimeters at the same depth and across years, a strong pattern emerged: annual nitrate leaching significantly decreased with depth across the study, averaging ~104 kg N ha

Indexed as

groundwaterlegacy storagenitrate leachingnitrogen budgetvadose zone

Identifiers

PMID35400773
PMCPMC8988158

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.